Translation of motivación

I fell asleep but woke up in the middle of the night. My stomach turned upside down and I could not hold myself anymore. I needed to vomit and ran to the bathroom. This occurred three times.
On Friday, I can send it from the US. But I would send it from here with EMS or even better with UPS, including delivery confirmation and tracking. From the US there will be no return address or tracking.
In order to get to this hidden lake one would have to row beneath a cave. On the other side of the cave the five of us were alone. The lake was surrounded by limestone mountains covered with tropical trees.